EnglishWe present a method for the computation of the renormalized group beta-functions and the central charge in two-dimensional supersymmetric sigma models in a gravitational background. The two-loops results are exhibited. We use the Pauli-Villars regularization which preserves supersymmetry and permits an unambiguous treatment of the model with torsion. The central charge we derive for a general manifold is in agreement with expression found on group manifolds.
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http://hdl.handle.net/11568/12648| Autori interni: | GUADAGNINI, ENORE |
| Autori: | GUADAGNINI E; MINTCHEV M |
| Titolo: | Beta functions and central charge of supersymmetric sigma models with torsion |
| Anno del prodotto: | 1987 |
| Digital Object Identifier (DOI): | 10.1016/0370-2693(87)90275-9 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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